* Fixed link in asm-journals.csl (still pointed to jbact style)

* Fixed documentation link in ASA style (old link gave a 404)
* Included a space between the colon following the issue number and the page numbers in the PLOS style, as required by the style guide
* Updated documentation link in PNAS style

csl/asa.csl

@@ -12,7 +12,7 @@
     <category term="sociology"/>
     <updated/>
     <summary>The ASA style.</summary>
-    <link href="http://www.asanet.org/page.ww?name=Quick+Style+Guide%38section=Sociology+Depts" rel="documentation"/>
+    <link href="http://www.asanet.org/galleries/default-file/asaguidelinesnew.pdf" rel="documentation"/>
   </info>
   <macro name="editor">
     <names variable="editor">

csl/asm-journals.csl

@@ -3,7 +3,7 @@
   <info>
     <title>American Society for Microbiology</title>
     <id>http://www.zotero.org/styles/asm-journals</id>
-    <link href="http://www.zotero.org/styles/jbact"/>
+    <link href="http://www.zotero.org/styles/asm-journals"/>
     <author>
       <name>Julian Onions</name>
       <email>julian.onions@gmail.com</email>

csl/plos.csl

@@ -139,7 +139,7 @@
 	    <text variable="container-title" form="short"/>
 	    <text variable="volume"/>
 	  </group>
-	  <text variable="page" prefix=":" suffix="." />
+	  <text variable="page" prefix=": " suffix="." />
 	</else>
       </choose>
       <text prefix=" " macro="access" />

csl/pnas.csl

@@ -12,7 +12,7 @@
     <category term="science"/>
     <updated>2008-01-14T08:48:39+00:00</updated>
     <summary>The Proceedings of the National Academy of Sciences Journal style.</summary>
-    <link href="http://www.pnas.org/misc/iforc.shtml" rel="documentation"/>
+    <link href="http://www.pnas.org/site/misc/iforc.shtml#order" rel="documentation"/>
   </info>
   <macro name="editor">
     <names variable="editor" prefix=" " delimiter=", ">